81871640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{433}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 192175200

約数和(自身を除く): 110303560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 163, 232, 290, 326, 433, 580, 652, 815, 866, 1160, 1304, 1630, 1732, 2165, 3260, 3464, 4330, 4727, 6520, 8660, 9454, 12557, 17320, 18908, 23635, 25114, 37816, 47270, 50228, 62785, 70579, 94540, 100456, 125570, 141158, 189080, 251140, 282316, 352895, 502280, 564632, 705790, 1411580, 2046791, 2823160, 4093582, 8187164, 10233955, 16374328, 20467910, 40935820, 81871640]

約数ペア:

[(1, 81871640), (2, 40935820), (4, 20467910), (5, 16374328), (8, 10233955), (10, 8187164), (20, 4093582), (29, 2823160), (40, 2046791), (58, 1411580), (116, 705790), (145, 564632), (163, 502280), (232, 352895), (290, 282316), (326, 251140), (433, 189080), (580, 141158), (652, 125570), (815, 100456), (866, 94540), (1160, 70579), (1304, 62785), (1630, 50228), (1732, 47270), (2165, 37816), (3260, 25114), (3464, 23635), (4330, 18908), (4727, 17320), (6520, 12557), (8660, 9454)]